Kelebihan dan kelemahan sistem inventory series#
In this paper, we study the design of a transfer line consisting of two unreliable machines in series and an interstage buffer. Finally, the research gaps in this field are discussed from the perspective of reverse logistics, consumer durable goods, inventory network structure and policy, spare parts demand pattern modeling, and big data analytics. Secondly, we classify the current literature based on analytics techniques, i.e., descriptive analytics, predictive analytics, and prescriptive analytics. Firstly, we focus on analyzing the supply chain structure of different inventory networks for managing spare parts. The novelty of this literature review is three-fold. The first group includes the characteristics of spare parts, products, inventory systems, and supply chains, while the second group focuses on the characteristics of research methodologies and topics in the reviewed studies. The studies are classified based on two groups of perspectives. In this review, 148 papers regarding spare parts inventory management published from 2010 to 2020 are examined.
Recently, spare parts inventory management has been attracting more attention due to the “right-to-repair” movement which requires that manufacturers provide sufficient spare parts throughout the life-cyle of their products to reduce waste so as to achieve sustainability. Spare parts are held as inventory to support product maintenance in order to reduce downtime and extend the lifetime of products. Entre los principales resultados de la investigación se tiene la identificación de aquellas referencias más importantes para el ingenio considerando múltiples criterios, permitiendo establecer una política de inventario que minimiza el costo y cumple con un nivel de servicio previamente definido por la organización. Finalmente se presenta la propuesta de aplicación de la política de control de inventario continua (s,Q), teniendo en cuenta el análisis de las políticas utilizadas para los repuestos y se valida mediante un caso aplicado a un ingenio azucarero. Posteriormente se realizó un análisis de demanda y el respectivo pronóstico para los ítems clasificados como tipo A. La metodología aplicada se basó inicialmente en la realización de una clasificación de los ítems mediante el uso del AHP difuso (FAHP), donde se tuvieron en cuenta importantes criterios relacionados con la caracterización del tipo de ítems, tales como el costo total y la criticidad, con esto se identificaron los grupos de ítems más representativos, después se realizó una segunda clasificación para identificar dentro de estos grupos los artículos críticos para el sistema de control. En este artículo se presenta una propuesta para el problema de control de inventarios de los ítems más representativos de un almacén de repuestos, donde se debe considerar más de un criterio. We conclude with a short discussion of application of these models in practice.Įl control de inventarios se ha convertido en uno de los temas más trabajados en la academia en colaboración con la industria debido a la alta representación que tienen los costos de almacenamiento de producto y los costos asociados a las ventas perdidas por no tener la disponibilidad del producto a la hora de la demanda. We further focus on the use of lateral and emergency shipments, and we refer to other extensions and the coupling of spare parts inventory control models to related problems, such as repair shop capacity planning. We discuss both the single location and multi-echelon models.
Our aim is to bring structure into the large body of related literature and to refer to the most important papers. We describe the characteristics of these networks and refer back to them throughout the survey. We link those models to two archetypical types of spare parts networks: networks of users who maintain their own systems, for instance in the military world, and networks of original equipment manufacturers who service the installed base of products that they have sold. In this paper, we survey models for spare parts inventory control under system-oriented service constraints. This is one of the key characteristics that distinguishes such inventory control from other fields of inventory control. Examples of such measures are system availability and the expected number of backorders over all spare parts. Since such downtimes are typically very expensive, generally system-oriented service measures are used in spare parts inventory control. Stocks of spare parts, located at appropriate locations, can prevent long downtimes of technical systems that are used in the primary processes of their users.
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